If it's showing on his statement then it is finalised, pending funds don't show like that
I am not from UK, but they do in my country, always on all banks and all kind of cards. Same on Neteller transactions, or any other e-wallet.
Sometimes you can tell there are pending transactions if the available balance is lower than the acc. balance, but the pending ones do show immediately without being finalized.
Maybe it is different in UK.